Gasket.



G. S. PARKER.

GASKET.

APPLICATION FILED APR. 21, 1910.

' Patented Mar. 4, 1913.

In 7/77? for Ca Zrz'n "8 Parl) inner wall beyon plane parallel to theface an CALVIN S. PARKER, OF LONDON, ONTARIO, CANADA.

GASKET.

Specification of Letters Patent. Application filed April 21. 1910.Serial No. 556,827.

Patented Mar. 4, 1913.

' To all whom, it may concern:

Be it known that I, CALVIN S. PARKER, a subject. of the King of GreatBritain and Ireland, residing at London, inthe Province of Ontario and.Dominion of Canada, have invented certain new and useful Improvements inGaskets, of which the 1 following is a. specification, reference beingjhad therein to the accompanying drawings.

My invention relates to iniprovements in gaskets for pipe couplers,especially designed for gravity couplers of the straightport type, inwhich the locking movement of the couplers is limited by the abuttingfaces of the gaskets.

Among the objects of my invention, are to inorease'the life of thegasket, to provide a gasket which will effectively prevent'leakage, andwhich may be easily and quickly detached from the coupler.

The invention resides in the construction of the gasket, in thearrangement thereof in relation to the coupling member, and, furment andcombination of parts as more fully hereinafter described and pointed outin the claims. e i

In the drawings; Figure I is a sectional side elevation of a lerembodying my invention; Fig. 2 is a [central section through a gasketembodying my invention; and Fig.

3 is a perspective vieyy of the retainer for the gasket.

The ood rating coupl A and B are of the straig t ort gravit pe, and eachis provided with the usual rally-projecting arm G, having a cam facedprojection or hook D on the outer end thereof, and adapted to engage theprojection E of the cooperating coupler.

F represents the neck of the coupler to which the flexible hose Gextending from the train pipe of the car is connected.

Depending from the inner wall II of the steam passage is an annularprojection I positioned adjacent the face J of the coupler, and forminwith that portion of the the projection a seat for the gasket K.

In stationary gaskets heretofore used the face of the gasket has beenositioned in. a perpendicular to the longitudinal axis of the coupler,and, therefore, since the meeting faces of the gaskets must lie in thesame plane in order to tightly seal the joint between the couplers, itwill be readily seen that in thelocked position of the couplers thelongitudinal axes of the latter would have to lie in the same st-raihtline,-which relation of the couplers wil be hereinafter termed as thehorizontal position.' Therefore, when the gaskets have become wornsufficiently to permit the adjacent ends of the couplers to drop belowthe horizontal position, the longitudinal axis of the couplers willassume an angular relation to each other,

which as will be readily understood will position the meeting faces ofthe gaskets in upwardly-diverging planes, thereby. sepa rating thegaskets at their lower-edges, causing leakage.

Since the wear on the gasket of a train pipe coupling is exceedinglygreat, and as the usual and preferable construct-ionv of gasket fortrain pipe couplers is formed of a composition which becomes more orless plastic under the action of steam, such a construction of gasket isvery short lived.

' In order .to increase the life of the gasket,

I arrangethe meeting faces thereof in relation to the couplers, so as toseal the joint betmeen the latter when the meeting ends of thecooperating couplers are arranged above the horizontal position. Thus,as shown, the upper portion L of the gasket is formed of greaterthickness than the lower portion M, and the gasket is so arranged inrelation to its seat that the thickest portion of the gasket is adjacentthe top of the coupler. This positions the outer or meeting face N ofthe gasket in a plane oblique to the longitu dinal axis of the couplerand nonparallel to the coupler face, the divergency between the planesof the coupler and the gasket faces being greatest at the top of thecoupler; The meeting faces of'the gasket therefore tightly abut, andseal the joint between the couplers when the meeting ends of the latterare above the horizontal position. As the gasketwcars, the couplers willgradually assume the horizontal position, but as the wear is greatestupon the upper edge of the gasket face a tight joint is at all timesmaintained until the gasket has worn sufiicient-ly to permit the meetingends of the couplers to fall below the horizontal position.

The gasket is properly positioned in relation to its seat by means of arecess m formed inone edge of the gasket, which is adapted to engage aprojection,-such as a pin 17., extending with n the seat.

0 is a retaining member for securing the gasket to its seat andcomprises a split annular ortion P for engaging'anannular recess formedin the gasket, and a 100 shaped section R projectin transverse y fromsaid annular portionian bent to form project-ions or lugs S adaptedtohave a locking enga ement with the annular pro, jection I. Tis-construetion of retaining member permits the same to be formed ofspring wire, andalso since the split annularportion is to expand, itforms a reinforcement for the gasket.

While I have shown and described my improved construction of gasket, asapplied,

to a train hose coupling, it will be understood that'it may be appliedto couplings of various types.

What I claim as my inventlon is:

1. The combination with cooperating couthe tendency of the meeting endsof the latter are above the horizontal position.

2. The combination-with cooperating coupiers of the gravity type havinggasket seats, of stationary gaskets engaging said seats each having itsouter face diverged from the seat'toward the top of the coupler for thepurpose described.

3. The combination with avit t ehavin iiithe eliii thereof? a coupler ofthe a stationary gasket seat of a stationary gasket having its outerface positioned in a plane diverging outwardl the plane of the en Intestimon in presence 0 and upwardly from of said coupler. whereof Iafiix my signature two witnesses.

CALVIN S. PARKER.

Witnesses;

JAMES P. BARRY,

N. KINSELLA.

